Headline Numbers

As of the latest CDC data release on August 24, 2020 there are:

Where I live, in Somerville, MA, as of August 24, 2020 there are:

Where my grandparents live, in Collier County, FL, as of August 24, 2020 there are:

Consequently, in the United States, there are now:

Globally, as of the latest WHO data release on August 26, 2020, there are:

Overall Covid Cases In The USA

Regions are defined as follows: Northeast (CT, ME, MA, NH, RI, VT, NJ, NY, PA), Midwest (IN, IL, MI, OH, WI, IA, KS, MN, MO, NE, ND, SD), South (AL, AR, DC, DE, FL, GA, KY, LA, MD, MS, NC, OK, SC, TN, TX, VA, WV) and West (AZ, CO, ID, NM, MT, UT, NV, WY, AK, CA, HI, OR, WA). The red line denotes the date that Health and Human Services (HHS) took over the production of data from the Center for Disease Control (CDC) on July 20, 2020.1

US Cases Compared to World Cases

World Case Maps: Total Cases and Cases per Capita

Covid Cases in Somerville, MA and MA

Latest Cases in Boston Area (Today, One Week Ago, Two Weeks Ago)

Date County Name Cases Deaths New Cases New Deaths
August 24, 2020 Middlesex County 27158 2053 102 10
August 17, 2020 Middlesex County 26565 2006 0 0
August 10, 2020 Middlesex County 26470 2005 50 2
August 24, 2020 Norfolk County 10885 1005 40 1
August 17, 2020 Norfolk County 10682 997 0 0
August 10, 2020 Norfolk County 10639 997 25 0
August 24, 2020 Suffolk County 22904 1095 198 2
August 17, 2020 Suffolk County 22017 1076 0 0
August 10, 2020 Suffolk County 21929 1074 80 0

New Covid Cases By State

The plot below shows the number of new COVID cases by state. Note that each figure has its own y axis; this is done so that trends can be seen within each state. Log scales can make the difference between 100 and 1000 cases hard to discern and a common y axis causes states like NY and CA to swamp states like NC. Negative new cases can occur when States revise their total number of cases downwards, as Hawaii did between June 30, 2020 and July 1, 2020.

COVID Cases per 1,000 Residents by State

This figure shows the number of COVID cases per 1,000.

Latest County Case Map

Latest County Death Map

Counties with the Most Cases Over Time

Date State County Name Cases Deaths
2020-08-24 CA Los Angeles County 232893 5558
2020-08-24 FL Miami-Dade County 152612 2253
2020-08-24 AZ Maricopa County 131962 2790
2020-08-24 IL Cook County 121877 5015
2020-08-24 TX Harris County 98506 2030
2020-08-01 CA Los Angeles County 190693 4669
2020-08-01 FL Miami-Dade County 121207 1647
2020-08-01 AZ Maricopa County 119295 2089
2020-08-01 IL Cook County 106131 4888
2020-08-01 TX Harris County 72964 1288
2020-07-01 CA Los Angeles County 105507 3402
2020-07-01 IL Cook County 90911 4581
2020-07-01 NY Queens County 65455 7059
2020-07-01 NY Kings County 59742 7104
2020-07-01 AZ Maricopa County 52266 817
2020-06-01 IL Cook County 78495 3658
2020-06-01 NY Queens County 62094 6271
2020-06-01 NY Kings County 56053 6742
2020-06-01 CA Los Angeles County 55968 2362
2020-06-01 NY Bronx County 45359 4480

Hospitalizations By State

Patients Currently in the ICU

Patients Currently on Ventilators

Cumulative Cases by County in the Northeast

Cumulative Cases by State Over Time

Cumulative Deaths by State Over Time

Daily Percent Positive Cases

According to the WHO the positive rate should be below 5%.2 Days above the threshold are denoted in red, days below are in blue. Note that the variables currently used for these plots –positiveIncrease and negativeIncrease– are being phased out and will be replaced by positiveCasesViral and negativeCasesViral. Each dot represents the rolling average of tests within the previous week (this approach smoothes out trends such as fewer cases being reported on weekends).

Partisanship and COVID Cases

Variants of Select Figures

Week to Week Changes in COVID Cases

Confirmed Cases as a Percentage of State Population

The two sets of points are confirmed cases (black), and potential cases (grey) which are confirmed cases times ten. For herd immunity, typically 70-90% of a population needs immunity.3


  1. See e.g., https://www.cnbc.com/2020/07/20/hhs-unveils-new-coronavirus-hospitalization-database-says-its-more-complete-than-cdcs.html

  2. https://coronavirus.jhu.edu/testing/tracker/overview

  3. See https://www.jhsph.edu/covid-19/articles/achieving-herd-immunity-with-covid19.html